/**
 * 
 */
Date.prototype.format =function(format){
	var o = {
	"M+" : this.getMonth()+1, //month
	"d+" : this.getDate(), //day
	"h+" : this.getHours(), //hour
	"m+" : this.getMinutes(), //minute
	"s+" : this.getSeconds(), //second
	"q+" : Math.floor((this.getMonth()+3)/3), //quarter
	"S" : this.getMilliseconds() //millisecond
	}
if(/(y+)/.test(format)) format=format.replace(RegExp.$1,(this.getFullYear()+"").substr(4- RegExp.$1.length));
for(var k in o)
	if(new RegExp("("+ k +")").test(format))
	format = format.replace(RegExp.$1,RegExp.$1.length==1? o[k] :("00"+ o[k]).substr((""+ o[k]).length));
	return format;
}